import java.util.Scanner;

public class Main {
    public static void nibutan(long n){
        long left=0;
        long right=n+1;
        long mid=0;
        while(left<right){
            mid=(right+left)/2;
            if(mid*(mid+1)==2*n){
            System.out.println("YES\n"+mid);
            return;
        }else if(mid*(mid+1)<2*n){
                left=mid+1;
            }else if(mid*(mid+1)>2*n){
                right=mid;
            }
        }
        System.out.println("NO");
}

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long N = sc.nextLong();
        nibutan(N);
    }
}